Lamp shade and means for mounting the same



March 11 1924.

A. BOSTROEM LAMP SHADE AND MEANS FOR MOUNTING THE SAME Filed Nov. 23, 1920 avwewtoz Patented li/llar. ii, 192%.

man

AUGUST BOSTROEM, OF NEW YORK, N. l'., ASSIGNOR TO SAMUEL ROBERT SCHWARTZ, OF NEW' YORK, N. Y.

LAMP SHADE AND MEANS FOR EEOUNTING- THE SAME.

Application filed November 23, 1920. Serial No. 426,068.

T all whom it may concern:

Be it known that I, AUoUsr BOSTROEM, a citizen of the United States of America, residing at New York, in the county of Bronx and State of New York, have invented a new and useful improvement in Lamp Shades and Means for Mounting the Same,

of which the following is a specification.

This invention relates to lamp shades and means for mounting the same, and has for its object to provide a simple and attractive structure which will enable adjustment and ready removal of the shade, as will be fully explained.

It will be described in its application to portable electric lamps, although it is obvious that its use is not by any means limited to this type of lamp.

It is well-known in lamp shades to con- 20 struct a shade adjustable about a single axis by pivotal mounting on two sides. To provide this type of mounting it is customary to provide a. hole in each of two opposed sides of the shade and to form trunnions on the frame-work of the lamp, which pivotally engage the holes mentioned. One disadvantage of this construction as ordinarily employed is that the shade cannot be readily removed. Where the shade is made of glass breakage is frequent, and if, as is usually the case, electric Wirin passes through one of the holes in the she e into a lamp socket located inside the shade it is obvious that before the shade can be removed the electric wires must be disconnected. The latter is a very tedious operation and is dangerous when a broken glass shade surrounds the 'field of operations.

In my invention, on the contrary, it is so not necessary to disconnect the wiring; the shade is removed by simply loosening a nut and sliding the shade out of engagement with its sup-porting bracket. 7

Other features and objects will appear from the detailed description taken in conjunction with the accompanying drawings, in which- Fig. 1 is a view of a portable electric desk lamp showing the application of my inrention.

Fig. 2 is a detail view of my invention showing my improved lamp shade mountmg.

Fig. 3 is a View similar to Fig. 2 but showing the shade alone.

Fig. i is a view of the end of the shade opposite the end shown in Fig. 3, and

Fig. 5 is a sectional View of my improved shade and mounting taken on the line 5-5 of Fig. 2, in the direction or" the arrows.

Figs. 6 and 7 show modifications of my invention.

In Fig. l is shown a portable electric lamp of well-known type comprising an elongated shade A and a supporting bracket B, on which is mounted an incandescent lamp socket C carrying lamp F. The bracket B is supported from the base E by a swivel joint D by means of which the bracket B may be adjusted vertically. The shade A is supported upon, the bracket B so that it can be, swung pivotally about a longitudinal axis.

The electric wires G pass through the bracket B, which is made of tubing, and into the socket C, mounted on an extension of the bracket. Since the latter is inside the shade, the wires must pass through the wall of the shade.

The construction so far described is well known. My improvement contemplates a round opening or hole 2 in the side of shade A, which will seat on a cylindrical bushing 1 on the socket. The bushing 1 is part of the standard construction of modern lamp sockets. This bushing may, of course, be made as a separate piece to slide over the bushing provided as an integral part of the lamp socket. A slot 3 is provided in the end of the shade running from the rim of the shade to the hole 2. The slot is of such width that bushing 1 will not pass through it while at the same time it is wide enough to allow the parts of the bracket B adjacent to the socket C to pass. These adjacent parts are designated by 4 and must be of such dimensions as not to interfere with the manipulation of the shade, as will now be described.

As a result of this construction the shade can be removed from engagement with bracket B by sliding it in the direction of its length, which involves, first, disengagement of bushing 1 and hole 2, and secondly, passage of the portions 4 of the bracket B through hole 2 and slot 3. Similarly, it is evident that the shade is readily put in place, that is, with hole 2 engaging bushing 1, by moving it in the direction of its length. When the shade is in place it will pivot about bushing 1 without being able to move laterally in any direction except its length.

'An alternative way of removing the shade would be to disengage the hole 2 from the bushing 1 by sliding the shade in the direction of its length, and next moving the shade in a direction transverse to the lengthwise movement, so that the slot 3 passes over the portion 12 (see Fig. 5) of the bracket B.

Still another way oi removing the shade would be possible where the bushing 1 is made separate from the lamp socket. In this case the bushing 1 might first be removed from engagement with the hole 2 and the shade then moved transversely of its length so that the slot 3 would pass over that portion of the socket C which serves as a seat for the bushing l, the dimensions of this portion or" the socket and the slot 3 being of course relatively proportioned so that this is possible.

In order to keep the shade in its intended place it is merely necessary to use the customary pivotal locking means at the other end of the shade. For this purpose a hole 5 is provided in the shade, and in opposed relation thereto on the bracket, a hole 6. Through these two holes passes a thumb screw 7 which is held in place by a wing nut 10. Washers 8 and 9 preferably of felt or resilient material are provided to protect the shade against breakage by permitting slight motions.

When the nut 10 and screw 7 are in place asv shown in Fig. 5, the shade. A is pivotally supported at both ends. By tightening nut 10 suiiiciently the shade may of course be locked against all motion. When nut 10 is removed and screw 7 slid out of engagement with the hole 5 in the shade, the latter may be removed from its mounting as previously explained without in any way disturbing the electric wiring. It is obvious that by using care the shade may be slid lengthwise without moving screw 7 By performing the operations in the reverse order the shade is easily put into place.

A very great advantage of my style of mounting, when used for a glass shade, is due to the -fact that one end of the shade while being pivotally held is yet tree to move in such a manner that the glass may expand, when heated, without danger of breakage.

In Figures 6 and 7 are shown modifications in the shape oi. the slot 3 which may be made while still retaining the function and purpose of my invention. In Fig. 6 the hole 2' is shown as debouching into a slot 3 through a constricted portion 11 of slot 3. The constricted portion serves to retain the bushing 1, while widening the slot 3 at neeasie all other places naturally makes removal of the shade easy.

in Fig. 7 it show a round opening 2 and a slot 3 with flaring sides. The narrowest portion oi? slot 3 is made of such size that the bushing is confined in hole 2". This form has the same advantages as that of Fig. 6. Slot 3 might also have its widest part at the place where it enters hole 2, if found desirable.

Many other modifications might be suggested, such as mounting the hole 2 on a suitable extension of the bracket B instead of on an extension the socket. his and similar modifications do not however depart from my inventive idea, the backbone of which is the use of a hole having an outlet of a width less than the diameter of the hole, together with suitable coacting means which will provide a pivotal mounting for the shade while at the same time allowing ready removal.

It is understood that l do'not limitmyself to the exact disclosure of the drawings and specification, but that my claims embrace all modifications and equivalents to which I am by law entitled.

I claim:

1. In a lamp, a shade, an opening in one end of the shade comprising a round portion and a slot portion and means on the other end of the shade whereby this end may be supported. I I

2. In a lamp, a shade, an opening in one end of the shade comprising around portion and a portion adjacent the round portion of a width less than the diameter of the round portion, and means on the other end of the shade whereby this end may be supported.

3. In a lamp, a shade open at one side, whereby a rim is formed, and an opening in one end of the shade consisting of a round portion, a portion adjacent the round portion of a width less than the diameter of the round portion, and a portion adjacent the second mentioned portion terminating at the rim of the shade, and means on the other end of the shade whereby this end may be supported.

4:. in a lamp, a shade, a key-hole shaped opening in one end of said shade, and means on the other end of the shade whereby this end may be supported.

5. in a lamp, a shade, an opening in one end of the shade comprising a round portion and a slot portion and means on the other end of the shade whereby this end may be supported pivotally.

6. In a lamp, a shade, an opening in one end or the shade comprising a round portion and a portion adjacent the round portion of a width less than the diameter of the round portion, and means on the other end of the shade whereby this end may be supported pivotally.

7. in a lamp, shade open at one side, whereby rim is formed, and an opening in one end of the shade consisting of a round portion, a portion adjacent the round portion of a width less than the diameter of the round portion, and a portion adjacent the second mentioned portion terminating at the rim of the shade, and means on the other end of the shade whereby this end may be supported pivotally.

8. In a lamp, a shade, a keyhole shaped opening in one end of said shade, and means on the other end of the shade whereby this end may be supported pivotally.

9. In a lamp, a shade, an opening in one end of the shade consisting of a round portion and a slot portion and a hole in the other end of said shade.

10. in a lamp, a shade, an opening in one end of the shade comprising a round portion and a portion adjacent the round portion of a width less than the diameter of the round portion, and a hole in the other end of the shade.

11. in a lamp, a shade, and an opening in one end of the shade consisting of a round portion, a portion adjacent the round portion of a width less than the diameter of the round portion, and a portion adjacent the second-mentioned portion terminating at the rim of the shade, and a hole in the opposite end of the shade.

12. In a lamp, a shade, a key-hole shaped opening in one end of said shade, and a hole in the other end of said shade.

13. In a lamp, a shade, a round hole in said shade, supporting means for said shade, a cylindrical bushing on the supporting means, which may engage the hole in the shade to provide pivotal mounting for the shade, and an opening in the shade connect ing the rim of the shade with said hole and having a portion adjacent the hole of such Width that the cylindrical bushing not pass through it, and all parts of said opening being of such width and conformation that the portion of the supporting means adjacent the bushing may pass freely therethrough.

i i. In a lamp, a shade, a key-hole shaped opening in said shade, supporting means for said shade, a cylindrical bushing on said supporting means, said bushing being of such diameter that it may engage the wide portion of the keyhole shaped openingto form a pivotal mounting for the shade, without being able to pass through the constricted portion of said opening, and the portion of the supporting means adjacent the bushing being of such shape and dimensions that it may pass freely through the said key-hole shaped opening.

15. in a lamp, a shade, a round hole in one end of said shade, supporting means for said shade, a cylindrical bushing on said supporting means which may engage the hole in the shade to provide a pivotal mounting for the shade and an opening in the shade connecting the rim of the shade with said hole and having a portion adjacent the hole of such width that the cylindrical bushing may not pass through it, and all parts of said opening being of such width and conformation that the portion of the supporting means adjacent the bushing may pass freely therethrough; and a hole in the other end of said shade.

16. In a lamp, a shade, a key-hole shaped opening in one end of said shade, supporting means for said shade, a cylindrical bushing on said supporting means, said bushing being of such diameter that it may engage the Wide portion of the key-hole shaped opening to form a pivotal mounting for the shade without being able to pass through the constricted portion of said opening, and the portion of the supporting means adjacent the bushing being of such shape and dimensions that it may pass freely through the said key-hole shaped opening, and a hole in the other end of said shade.

17. In a lamp, a shade, a round hole in one end of said shade, supporting means for said shade, a cylindrical bushing on said supporting means which may engage the hole in the shade to provide a pivotal mounting for the shade and an opening in the shade connecting the rim of the shade with said hole and having a portion adjacent the hole of such width that the cylindrical bushing may not pass through it, and all parts of said opening being of such width and conformation that the portion of the supporting means adj aoent the bushing may pass freely therethrough, and a hole in the other end of said shade, and means mounted on the supporting means for slidably engaging said last-mentioned hole so as to provide a pivotal mounting.

18. In a lamp, a shade, a key-hole shaped opening in one end of said shade, supporting means for said shade, a cylindrical bushing on said supporting means, said bushing being of such diameter that it may engage the wide portion of the keyhole shaped opening to form a pivotal mounting for the shade without being able to pass through the constriated portion of said opening, and the portion of the supporting means adjacent the bushing being of such shape and dimensions that it may pass freely through the said keyhole shaped opening, and a hole in the other end of said shade, and means mounted on said supporting means for slidably engaging said last-mentioned hole so as to provide a pivotal mounting.

19. In a lamp, a shade, an opening in one end of said shade, consisting of a round por- 1 reas re tion and a portion connecting the roundvportion With the rim of the shade, the width of said second portion adjacent the round portion being less than the diameter 01 the round portion, a hole in the other end of the shade, a tubular support for the shade, an incandescent lamp socket mounteo on said support, a portion of said socket being formed as a cylindrical bushing of such diameter that it may engage the round portion of said opening to form a pivotal mounting without being able to pass directly from the round portion to the second portion of said opening, electric wiring inside the tubular support passing into the lamp socket through its cylindrical bushing, a member slidably mounted on said support adapted to slidably and pivotally engage the hole, a removable locking means in adjustable engagement With said member whereby sliding movement of the latter may be prevented, the portion .of said support adjacent the bushingbeingof such dimensions and conformation that it will pass freely through the said opening, whereby a pivotal mounting is provided for the shade and whereby the shade may be readily removed or replaced without disturbing the electric Wirmg.

In testimony whereof, I have signed my name to this specificationin the presence of two subscribing Witnesses, this twenty-second day of November, 1920.

AUGUST BOSTROEM. Witnesses IDA SMITH, JnssIE VJ. SCHWARTZ. 

